Define contact force

Three blocks are pushed with a force F across a frictionless table as shown in figure . Let N_1 be the contact force between the left two blocks and N_2 be the contact force between the right two blocks. Then

Which of the following is an example of a non-contact force _____ the force exerted by us to lift a bucket square hit a cricket ball for runs square the force exerted by magnet square push a stationary car square

What are non contact force?

Statement I: Work done by normal contact force can be non -zero Statement II: Normal contact force is always perpendicular to displacement of object. (Here displacement is measured with respect to frame of reference attached to the two surface in contact. )

Statement I: If a car is taking a turn on a banked road, then the normal contact force between car and road is greater than the weight of car (neglecting friction). Statement II: On a banked road, horizontal component of normal contact force between car and road provides necessary centripetal force. Assume friction is absent.

Three blocks of mass 4 kg, 2 kg, 1 kg respectively are in contact on a frictionless table as shown in the figure. If a force of 14 N is applied on the 4 kg block, the contact force between the 4 kg and the 2 kg block will be

Define unit of force. Write down its units in CGS system and SI and find the relationship between them.

Which catalyst is used in contact process of manufacturing of H_2SO_4 ?

Define conservative force. Show that the work done around a closed path in a conservative force field is zero.